Elizabeth,
While you must be disappointed, the good news is that it sounds as if you are not giving up nor let this get you down. That is a perfect position to start from. So good for you!
I would recommend that you take a moment and read this article here that I wrote particularly for students who are in your situation
www.project-management-prepcast.com/failed-pmp-exam
. It contains my thoughts and recommendations on how to recover and pass with flying colors.
I would recommend that you take Tip 4 to heart in particular and understand why your answers were wrong. It sounds as if you are studying a lot and that you know the material. But you may have trouble getting to the essence of the questions. We know that our simulator offers vague questions, but the real exam is even vaguer (as you know). So answering a lot of questions and then reviewing each question you got wrong so you can improve and learn will lead you to success.
You can do this!